Automobile bumper



FIG. 1 is a front elevation view of the automobile bumper showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an automobile bumper, as shown. 